Cita APA (7th ed.)
Sharp, A. M., Register, C. A., & Grimes, P. W. (1998). Economics of social issues (13th ed.). Irwin/McGraw-Hill.
Cita Chicago (17th ed.)
Sharp, Ansel Miree, Charles A. Register, i Paul W. Grimes. Economics of Social Issues. 13th ed. Boston, Mass.: Irwin/McGraw-Hill, 1998.
Cita MLA (9th ed.)
Sharp, Ansel Miree, et al. Economics of Social Issues. 13th ed. Irwin/McGraw-Hill, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.